[explorer][xs]: remove loading of tipsy plugins as not being used any more (never worked!).
[explorer][xs]: remove loading of tipsy plugins as not being used any more (never worked!).

openspending/openspendingjs-old,openspending/openspendingjs-old,openspending/openspendingjs,openspending/openspendingjs-old,RCGTDev/openspendingjs,openspending/openspendingjs-old,openspending/openspendingjs,RCGTDev/openspendingjs,openspending/openspendingjs,openspending/openspendingjs,RCGTDev/openspendingjs,RCGTDev/openspendingjs